Finding the Fourth Proportional to 7,019.65, 10,520.37 and 2,854.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,019.65 : 10,520.37 = 2,854.81 : x
2. Step 2: Convert to fraction form
   7,019.65/10,520.37 = 2,854.81/x
3. Step 3: Cross multiply
   7,019.65x = 10,520.37 × 2,854.81
4. Step 4: Simplify right side
   7,019.65x = 30,033,657.48
5. Step 5: Solve for x
   x = 30,033,657.48/7,019.65
6. Step 6: Final answer
   x = 4,278.51